#ifndef __DRV_USART_H__
#define __DRV_USART_H__
#include "stm32f4xx.h"
#include "stdio.h"

void drv_usart1_init(void);

void drv_usart2_init(void);


void usart_sendstr(USART_TypeDef * USARTx, char* str, int size);


int fputc(int ch, FILE *f);

#endif
